Diagnosis Code S20.422D

ICD-10: S20.422D Short Description: Blister (nonthermal) of left back wall of thorax, subs Long Description: Blister (nonthermal) of left back wall of thorax, subsequent encounter This is the 2018 version of the ICD-10-CM diagnosis code S20.422D

Valid for Submission
The code S20.422D is valid for submission for HIPAA-covered transactions.

Code Classification

Injury, poisoning and certain other consequences of external causes (S00–T98)

Information for Patients

What are blisters?

Blisters are fluid-filled sacs on the outer layer of your skin. They form because of rubbing, heat, or diseases of the skin. They are most common on your hands and feet.

Other names for blisters are vesicles (usually for smaller blisters) and bulla (for larger blisters).

How do you get blisters?

Blisters often happen when there is friction - rubbing or pressure - on one spot. For example, if your shoes don't fit quite right and they keep rubbing part of your foot. Or if you don't wear gloves when you rake leaves and the handle keeps rubbing against your hand. Other causes of blisters include

What are the treatments for blisters?

Blisters will usually heal on their own. The skin over the blister helps keep out infections. You can put a bandage on the blister to keep it clean. Make sure that there is no more rubbing or friction on the blister.

You should contact your health care provider if

The blister looks infected - if it is draining pus, or the area around the blister is red, swollen, warm, or very painful

You have a fever

You have several blisters, especially if you cannot figure out what is causing them

You have health problems such as circulation problems or diabetes

Normally you don't want to drain a blister, because of the risk of infection. But if a blister is large, painful, or looks like it will pop on its own, you can drain the fluid.

How can I prevent blisters?

There are some things you can do to prevent friction blisters:

Make sure that your shoes fit properly

Always wear socks with your shoes, and make sure that the socks fit well. You may want to wear socks that are acrylic or nylon, so they keep moisture away from your feet.

Wear gloves or protective gear on your hands when you use any tools or sports equipment that cause friction.

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